diff --git a/force_bdss/api.py b/force_bdss/api.py
index 60980c9d0c6e0cae2d294a43fd7addb49eeb08db..828570458e60ba2d9b117fc32f9279b2ec28696d 100644
--- a/force_bdss/api.py
+++ b/force_bdss/api.py
@@ -28,7 +28,4 @@ from .notification_listeners.base_notification_listener import BaseNotificationL
 from .notification_listeners.base_notification_listener_factory import BaseNotificationListenerFactory  # noqa
 from .notification_listeners.base_notification_listener_model import BaseNotificationListenerModel  # noqa
 
-from .local_traits import (
-    ZMQSocketURL,
-    Identifier
-)
+from .local_traits import (ZMQSocketURL, Identifier)  # noqa
diff --git a/force_bdss/core_plugins/dummy/ui_notification/ui_notification.py b/force_bdss/core_plugins/dummy/ui_notification/ui_notification.py
index e559ad4718c92fddcc61c248e3b4c893bbf5fa5d..b4e039bc619d46dad9084796ce3ed0562256085e 100644
--- a/force_bdss/core_plugins/dummy/ui_notification/ui_notification.py
+++ b/force_bdss/core_plugins/dummy/ui_notification/ui_notification.py
@@ -1,5 +1,5 @@
 import logging
-from traits.api import List, Instance, String
+from traits.api import Instance, String
 
 from force_bdss.api import (
     BaseNotificationListener,
diff --git a/force_bdss/io/workflow_reader.py b/force_bdss/io/workflow_reader.py
index 1283a86ef05ec7338e3d707e10607165a071feb4..9cb1d008413b14d61da4ee82617ba294154aceba 100644
--- a/force_bdss/io/workflow_reader.py
+++ b/force_bdss/io/workflow_reader.py
@@ -224,4 +224,3 @@ class WorkflowReader(HasStrictTraits):
             listeners.append(nl_factory.create_model(model_data))
 
         return listeners
-
diff --git a/force_bdss/local_traits.py b/force_bdss/local_traits.py
index 7bd1e079dc9297808587637a552e5529e2bede2e..f2aa3859b2c8488d50dce64996d0ce098ac0066a 100644
--- a/force_bdss/local_traits.py
+++ b/force_bdss/local_traits.py
@@ -26,6 +26,7 @@ class ZMQSocketURL(BaseStr):
 
         return value
 
+
 #: Identifies a CUBA type with its key. At the moment a String with
 #: no validation, but will come later.
 CUBAType = String()
diff --git a/force_bdss/tests/test_local_traits.py b/force_bdss/tests/test_local_traits.py
index e7d8281784b3d82d92a28aae27b3137360083f89..d66a863206a887c90073feec2ce0b749cb4c83a9 100644
--- a/force_bdss/tests/test_local_traits.py
+++ b/force_bdss/tests/test_local_traits.py
@@ -45,4 +45,3 @@ class TestLocalTraits(unittest.TestCase):
                        "tcp://1.1.1.1:100000"]:
             with self.assertRaises(TraitError):
                 c.socket_url = broken
-